Automated cell winding and packaging machine

Abstract

The application discloses an automatic electric core winding and packaging machine, which comprises a rack, a positive plate feeding mechanism, a negative plate feeding mechanism, an electric core winding and casing mechanism and a battery collecting mechanism, wherein the positive plate feeding mechanism, the negative plate feeding mechanism, the electric core winding and casing mechanism and the battery collecting mechanism are arranged on the rack respectively; the positive plate feeding mechanism comprises a plate feeding rack, a conveying assembly, a plate adsorption assembly and a diaphragm feeding assembly, the plate feeding rack is arranged on the rack in an inclined manner, the conveying assembly is used for conveying the positive plate, and the plate adsorption assembly is used for adsorbing the plate on the conveying assembly to the diaphragm of the diaphragm feeding assembly. The application is an automatic electric core winding and packaging machine, through the arrangement of the positive plate feeding mechanism, the negative plate feeding mechanism, the electric core winding and casing mechanism and the battery collecting mechanism, the normal feeding of the plate can be ensured, the plate is conveniently adsorbed by the mechanical hand, and the tab can be ensured to be exposed outside the steel shell.

Description

Technical Field

[0001] This invention relates to the field of battery production, and in particular to an automated cell winding and packaging machine. Background Technology

[0002] In existing cylindrical battery production processes, it is impossible to ensure that the electrodes are fed in a vertical position, making it difficult for robotic arms to accurately pick up the electrodes and perform normal battery winding operations. Furthermore, in current production processes, the battery tabs are pressed into the steel casing, requiring manual removal. Therefore, designing a battery cell winding and packaging machine that ensures proper electrode feeding, facilitates robotic arm pickup, and keeps the tabs exposed outside the steel casing is a problem that those skilled in the art need to consider. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide an automated battery cell winding and packaging machine that can ensure normal feeding of electrode sheets, facilitate robotic arm adsorption, and ensure that the electrode tabs are exposed outside the steel shell.

[0004] The objective of this invention is achieved through the following technical solution:

[0005] An automated battery cell winding and packaging machine includes: a frame, a positive electrode feeding mechanism, a negative electrode feeding mechanism, a battery cell winding and shelling mechanism, and a battery receiving mechanism, wherein the positive electrode feeding mechanism, the negative electrode feeding mechanism, the battery cell winding and shelling mechanism, and the battery receiving mechanism are respectively disposed on the frame;

[0006] The positive electrode feeding mechanism includes an electrode feeding rack, a conveying assembly, an electrode adsorption assembly, and a separator feeding assembly. The electrode feeding rack is inclinedly arranged on the frame. The conveying assembly is used to convey the positive electrode and the electrode adsorption assembly is used to adsorb the electrode on the conveying assembly onto the separator of the separator feeding assembly.

[0007] The battery cell winding and casing mechanism includes a winding device and a casing device. The winding device is used to wind stacked electrodes and separators. The casing device includes a core pushing rod and a core clamping robot. The core clamping robot clamps the wound battery cell to the casing station. The core pushing rod is used to push the battery cell on the core clamping robot into the steel casing. The core pushing rod has a clearance notch to avoid the tabs on the battery cell.

[0008] The advantages and beneficial effects of this invention compared to the prior art are as follows:

[0009] This invention is an automated battery cell winding and packaging machine. By setting up a positive electrode feeding mechanism, a negative electrode feeding mechanism, a battery cell winding and casing mechanism, a battery receiving mechanism, and a positive and negative electrode feeding assembly, it can ensure normal electrode feeding, facilitate robotic arm adsorption, and ensure that the electrode tabs are exposed outside the steel shell. Attached Figure Description

[0010] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a schematic diagram of the structure of an automated battery cell winding and packaging machine according to an embodiment of the present invention;

[0012] Figure 2 for Figure 1 A schematic diagram of the structure of the automated battery cell winding and packaging machine from another perspective;

[0013] Figure 3 for Figure 1 The diagram shows the structure of the electrode feeding assembly of the automated cell winding and packaging machine.

[0014] Figure 4 This is a schematic diagram of the positive electrode feeding mechanism according to an embodiment of the present invention;

[0015] Figure 5 for Figure 4 The diagram shows the structure of the electrode adsorption assembly.

[0016] Figure 6 This is a schematic diagram of the structure of a battery cell winding and casing mechanism according to an embodiment of the present invention;

[0017] Figure 7 for Figure 6 A schematic diagram of the winding device of the battery cell winding and casing mechanism shown;

[0018] Figure 8 for Figure 6 A schematic diagram of the battery cell winding and packaging mechanism from another perspective;

[0019] Figure 9 for Figure 7 A schematic diagram of the winding device from another perspective;

[0020] Figure 10 for Figure 6 The diagram shows the structure of the core-grabbing robot.

[0021] Figure 11 for Figure 6 A schematic diagram of the core-grabbing robot from another perspective is shown.

[0022] Figure 12 for Figure 6 The diagram shows the structure of the shaft-changing drive unit.

[0023] Figure 13 This is a schematic diagram of the structure of a battery collecting mechanism according to an embodiment of the present invention;

[0024] Figure 14 for Figure 13 A schematic diagram of the battery collection mechanism from another perspective;

[0025] Figure 15 for Figure 13 The diagram shows the structure of the battery receiving mechanism's receiving box device. Detailed Implementation

[0026] To facilitate understanding of the present invention, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0027] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] Please see Figure 1An automated battery cell winding and packaging machine includes: a frame 10, a positive electrode feeding mechanism 20, a negative electrode feeding mechanism 50, a battery cell winding and casing mechanism 30, and a battery receiving mechanism 40. The positive electrode feeding mechanism, the negative electrode feeding mechanism, the battery cell winding and casing mechanism, and the battery receiving mechanism are respectively mounted on the frame. It should be noted that the frame 10 is used to fix the entire automated battery cell winding and packaging machine; the positive electrode feeding mechanism 20 is used to feed positive electrode sheets; the negative electrode feeding mechanism is used to feed negative electrode sheets; the battery cell winding and casing mechanism 30 is used to wind the electrode sheets and separator into a battery cell and transfer the battery cell into a steel casing; the battery receiving mechanism 40 is used to receive the steel casing. The positive electrode feeding mechanism and the negative electrode feeding mechanism have the same structure.

[0030] Please see Figure 2 The positive electrode feeding mechanism 20 includes an electrode feeding rack 21, a conveying assembly 22, an electrode adsorption assembly 25, and a diaphragm feeding assembly 26. The electrode feeding rack is inclinedly mounted on the frame. The conveying assembly conveys the positive electrode, and the electrode adsorption assembly adsorbs the electrode from the conveying assembly onto the diaphragm of the diaphragm feeding assembly. It should be noted that the diaphragm feeding assembly 26 is used to feed the diaphragm. By setting the electrode feeding rack at an incline, the electrode can be fed at an angle, facilitating adsorption by the robotic arm. It also prevents the electrode from accidentally protruding forward or entering the mechanical structure, thus affecting normal operation.

[0031] Please see Figure 2 The diaphragm feeding assembly 26 includes a diaphragm feeding tray 261, a tension adjusting arm 262, and multiple tension rollers 263. The diaphragm feeding tray and the tension adjusting arm are respectively mounted on the frame, and each tension roller is also mounted on the frame. It should be noted that the diaphragm feeding tray 261 is used to hold rolled diaphragms; the tension adjusting arm 262 is used to hold diaphragms to be fed; and the tension rollers 263 are used to limit the conveying direction of the diaphragms, thus changing the feeding direction to facilitate their entry into the winding station.

[0032] Furthermore, the diaphragm feeding assembly also includes a tension bearing and a tension control cylinder, with the tension control cylinder connected to the tension adjusting arm via the tension bearing. The tension control cylinder is equipped with five magnetic switch detection points (A, B, C, D, and E). During operation: the tension control cylinder generates pressure through one-way airflow, controlled by a one-way valve. The five magnetic switches on the tension control cylinder detect five different states of the tension roller. Specifically, at magnetic switch A, there is no diaphragm at the lower limit; at magnetic switch B, there is no diaphragm at the upper limit; at magnetic switch C, the tension is appropriately distributed at the appropriate position; at magnetic switch D, the material tray motor releases its brake and begins feeding; at magnetic switch E, the material tray motor brakes and stops feeding. Thus, by controlling the tension of the upper and lower diaphragms, the size of the wound cell can be controlled during the winding process, creating the necessary conditions for the casing process.

[0033] Please see Figure 3 The positive electrode feeding mechanism 20 further includes an electrode feeding assembly 27, which is used to convey the electrodes from the electrode adsorption assembly to the diaphragm of the diaphragm feeding assembly. The electrode feeding assembly 27 includes an electrode feeding plate 271, an electrode limiting block 272, and a conveying drive unit 273. The conveying drive unit is mounted on the frame, the electrode feeding plate is mounted on the conveying drive unit, and the electrode limiting block is mounted on the electrode feeding plate. The conveying drive unit drives the electrode feeding plate to move, so that the electrodes on the electrode feeding plate are delivered to the diaphragm. Thus, by setting the electrode feeding plate 271, the electrode limiting block 272, and the conveying drive unit 273, the adsorbed electrodes can be conveyed to the winding station for winding operations.

[0034] Furthermore, the electrode feeding assembly 27 also includes two electrode limiting edges, which are respectively disposed at the edges of the electrode feeding plate 271, and a strong magnet is also provided at the electrode outlet end of the electrode feeding plate 271. During the electrode feeding process, the strong magnet can effectively prevent the electrode from bending, keeping the electrode in a straight state to facilitate winding and improve winding efficiency.

[0035] Specifically, please refer to Figure 4 A positive electrode feeding mechanism 20 is provided, which is mounted on a frame 10. The electrode feeding mechanism 20 includes an electrode feeding rack 21, a conveying assembly 22, and a limiting stop 23. The electrode feeding rack is inclinedly disposed on the frame, and the conveying assembly and the limiting stop are respectively disposed on the electrode feeding rack. It should be noted that the electrode feeding rack 21 is used to fix the conveying assembly 22 and the limiting stop 23. The conveying assembly 22 is used to convey the electrode to the pick-up station while ensuring that the electrode does not tip over. The limiting stop 23 is used to limit the movement of the electrode on the conveyor belt to ensure that it can be conveyed normally and stably.

[0036] Please see Figure 4 The conveying assembly 22 includes a drive motor 221, a conveyor belt 222, and a fixing block 223. The drive motor is mounted on the electrode loading rack and drives the conveyor belt to rotate. The fixing block is mounted on the conveyor belt. It should be noted that the drive motor 221 drives the conveyor belt to rotate, thereby causing the fixing block to move obliquely upwards. When multiple electrodes rest against the fixing block, they are driven upwards by the conveyor belt. Because the conveyor belt itself is inclined, under the influence of gravity and resting against the fixing block, the electrodes will not tip over, remaining in a relatively vertical state, which also facilitates the adsorption assembly's adsorption of the electrodes.

[0037] Please see Figure 4 The limiting stop 23 includes a first right-angled baffle 231 and a second right-angled baffle 232. The first right-angled baffle and the second right-angled baffle are respectively disposed on the electrode feeding rack, and the first right-angled baffle and the second right-angled baffle are respectively located on both sides of the conveyor belt. It should be noted that the first right-angled baffle 231 and the second right-angled baffle 232 are used to jointly block the position on both sides when the electrode is fed, so as to prevent the electrode from shifting position during the feeding process.

[0038] Please see Figure 4 The electrode loading rack 21 includes a first fixed round rod 211, a second fixed round rod 212, and a loading fixing plate 213. The first fixed round rod and the second fixed round rod are respectively inclinedly arranged on the frame. The first end of the loading fixing plate is disposed on the first fixed round rod, and the second end of the loading fixing plate is disposed on the second fixed round rod. In this way, by setting the first fixed round rod 211, the second fixed round rod 212, and the loading fixing plate 213, it is convenient to fix the conveying assembly 22 and the limiting stop 23.

[0039] It should be noted that the angle of inclination between the first fixed rod and the frame is 30° to 80°. Similarly, the second fixed rod also has the same angle of inclination as the first fixed rod. In this way, by setting the first fixed rod with a certain angle of inclination, the electrode can be made to move on the fixed block while moving on the conveyor belt, so that the electrode moves in a relatively vertical state.

[0040] Please see Figure 4 The electrode feeding mechanism further includes an electrode blocking assembly 24, which is disposed on the electrode feeding rack and located at the electrode discharge end of the conveyor belt. The electrode blocking assembly is used to block the feeding of the electrode.

[0041] Please see Figure 4 The electrode blocking assembly includes a fixing frame, a mounting plate, and a baffle. The fixing frame is disposed on the electrode feeding rack, the mounting plate is disposed on the fixing frame, and the baffle is disposed on the mounting plate. Thus, by setting up the fixing frame, mounting plate, and baffle, the electrode on the conveyor belt can be blocked, preventing it from continuing to move and falling off the conveyor belt.

[0042] Please see Figure 5 The electrode feeding mechanism further includes an electrode adsorption assembly 25, which is disposed on the frame and is used to adsorb the electrodes on the conveyor belt into the electrode winding station.

[0043] Please refer to it again. Figure 5 The electrode adsorption assembly 25 includes a rotary drive 251, a cam structure 252, a connector 253, and a vacuum nozzle 254. The cam structure is mounted on the frame, and the rotary drive and connector are respectively mounted on the cam structure. The rotary drive drives the connector to rotate along the outer surface of the cam structure, and the vacuum nozzle is mounted on the connector. It should be noted that the rotary drive 251 drives the connector 253 to rotate; the cam structure 252 fixes the rotary drive 251; and the connector 253 rotates along the outer surface of the cam, thereby changing the direction of the vacuum nozzle 254 so that the vacuum nozzle 254 can adsorb the electrode.

[0044] Furthermore, the connecting component includes a rotating plate, a rotating shaft, a connecting plate, and a nozzle fixing plate. One end of the rotating plate is disposed on the output shaft of the rotary drive component, and the other end of the rotating plate has an elliptical elongated hole. The rotating shaft passes through the elliptical elongated hole and abuts against the outer surface of the cam structure. The first end of the connecting plate is disposed on the rotating shaft, the nozzle fixing plate is disposed on the second end of the connecting plate, and the vacuum nozzle is disposed on the nozzle fixing plate. Thus, by providing the rotating plate, rotating shaft, connecting plate, and nozzle fixing plate, rotation on the outer surface of the cam can be achieved, and the vacuum nozzle can also be fixed.

[0045] Specifically, the connecting component further includes a tension roller and a limiting slide plate. The tension roller is rotatably mounted on the cam structure, and the limiting slide plate has a limiting groove, within which the connecting plate is embedded. Thus, by providing the tension roller and the limiting slide plate, the rotation shaft and the connecting plate can be limited, allowing them to slide stably.

[0046] The battery cell winding and casing mechanism includes a winding device and a casing device. The winding device is used to wind stacked electrodes and separators. The casing device includes a core pushing rod and a core clamping robot. The core clamping robot clamps the wound battery cell to the casing station. The core pushing rod is used to push the battery cell on the core clamping robot into the steel casing. The core pushing rod has a clearance notch to avoid the tabs on the battery cell.

[0047] It should be noted that the winding device includes a winding assembly and a turning assembly. The winding assembly and the turning assembly are respectively disposed on the frame. The winding assembly is used to wind the positive and negative electrode sheets and the separator into battery cells. The turning assembly is used to transfer the wound battery cells.

[0048] Further explanation is needed; please refer to [link / reference]. Figure 6 A battery cell winding and casing mechanism 30 includes a winding device 31 and a casing device 32. It should be noted that the frame 10 is used to fix the winding device 31 and the casing device 32; the winding device 31 is used to wind the electrode sheet and the separator; the casing device 32 is used to load the wound battery cell into the steel casing.

[0049] Please see Figure 6 The winding device 31 includes a winding assembly 311 and a needle-turning assembly 312. The needle-turning assembly 312 includes a shaft-changing frame 3121, a shaft-changing drive unit 3122, and a rotating disk 3123. The shaft-changing frame is mounted on the frame, and the shaft-changing drive unit and the rotating disk are respectively mounted on the shaft-changing frame. The shaft-changing drive unit drives the rotating disk to rotate. It should be noted that the winding assembly 311 is used to wind the electrode sheet and the separator; the needle-turning assembly 312 is used to replace the wound rotating shaft, allowing the wound battery cell to be gripped by a robotic arm, while the unwound rotating shaft can be wound, thereby improving work efficiency.

[0050] Furthermore, the shaft changing frame 3121 is used to fix the shaft changing drive unit 3122 and the rotating disk 3123; the rotating disk 3123 is provided with a rotating shaft, thereby enabling the winding operation of the electrode sheet and the diaphragm.

[0051] Please see Figure 7The winding assembly 311 includes a winding drive unit 3111, a first rotating shaft 3112, and a second rotating shaft 3113. The first rotating shaft and the second rotating shaft are respectively disposed on the rotating turntable, and the winding drive unit is disposed on the shaft changing frame. The winding drive unit is used to drive the first rotating shaft or the second rotating shaft to rotate. It should be noted that the winding drive unit 3111 is used to drive the rotating shaft to rotate, realizing the winding operation of the electrode sheet and the separator; the first rotating shaft 3112 and the second rotating shaft 3113 facilitate the replacement of the wound battery cell, that is, one is used for winding, and the other is used for unloading and casing.

[0052] Please see Figure 7 The casing assembly 32 includes a casing positioning component 321, a core pushing component 322, and a core clamping robot 323. The casing positioning component and the core clamping robot are respectively mounted on the frame. The core clamping robot is used to clamp the wound core into the casing assembly station. It should be noted that the casing positioning component 321 is used to position the steel casing; the core pushing component 322 is used to push the wound core into the steel casing; and the core clamping robot 323 is used to clamp the wound core from the winding station into the casing assembly station.

[0053] Further reading Figure 7 The core pushing assembly 322 includes a core pushing rod 3221 and a casing driving part 3222. The casing driving part is disposed on the frame, and the core pushing rod is disposed on the casing driving part. The core pushing rod is used to push the core into the battery casing. Thus, by providing the core pushing rod 3221 and the casing driving part 3222, the wound battery cell can be pushed into the steel casing. This allows for rapid winding and stable installation into the casing.

[0054] Please see Figure 8 The winding device 31 further includes a winding positioning assembly 313, which includes a first winding drive 3131, a second winding drive 3132, a first positioning roller 3133, and two second positioning rollers 3134. The first winding drive and the second winding drive are respectively mounted on the frame. The first winding drive is used to drive the first positioning roller to move upward, and the second winding drive is used to drive the two second positioning rollers to move downward simultaneously. It should be noted that the simultaneous action of the first winding drive 3131 and the second winding drive 3132 brings the first positioning roller 3133 and the two second positioning rollers 3134 closer together, thereby achieving positioning of the electrode and diaphragm during winding. This prevents the electrode and diaphragm from becoming loose during winding, clamps the electrode and diaphragm, and further improves the reliability of winding.

[0055] It should be noted that the first winding drive component includes a first vertical guide rail, a first winding positioning frame, and a first vertical drive unit. The first vertical guide rail is disposed on the frame, the first winding positioning frame slides on the first vertical guide rail, and the first vertical drive unit drives the first winding positioning frame to move vertically along the first vertical guide rail. The first positioning roller is disposed on the first winding positioning frame. Thus, by providing the first vertical guide rail, the first winding positioning frame, and the first vertical drive unit, the driving of the first positioning roller 3133 is easily achieved.

[0056] It should also be noted that the first winding drive component further includes a first winding fixing frame and a first elastic roller. The first winding fixing frame is disposed on the first winding positioning frame, and the first elastic roller is disposed on the first winding fixing frame. Thus, by setting the first winding fixing frame and the first elastic roller, the electrode sheet and diaphragm wound together can be pressed together with the second elastic roller on the second winding fixing frame to achieve the pressing effect on the electrode sheet and diaphragm.

[0057] It should be noted that the second winding drive component includes a second vertical guide rail, a second winding positioning frame, and a second vertical drive unit. The second vertical guide rail is mounted on the frame, the second winding positioning frame slides on the second vertical guide rail, and the second vertical drive unit drives the second winding positioning frame to move vertically along the second vertical guide rail. Two second positioning rollers are respectively mounted on the second winding positioning frame. Thus, by providing the second vertical guide rail, the second winding positioning frame, and the second vertical drive unit, the driving of the second positioning rollers 3134 is easily achieved.

[0058] It should also be noted that the second winding drive further includes a second winding fixing frame and a second elastic roller. The second winding fixing frame is disposed on the second winding positioning frame, and the second elastic roller is disposed on the second winding fixing frame. This allows for the pressing of the electrode sheet and the diaphragm.

[0059] Please see Figure 8 The winding device 31 further includes a rotation positioning assembly 314, which includes a rotation positioning frame 3141, a rotation shaft 3142, and a rotation drive unit 3143. The rotation positioning frame is mounted on the frame, and the rotation shaft and the rotation drive unit are respectively mounted on the rotation positioning frame. The rotation drive unit is used to drive the rotation shaft to rotate. It should be noted that the rotation positioning assembly 314 is used to limit the direction and position of the diaphragm and electrode entering the winding device, thereby enabling more accurate and efficient winding operations.

[0060] It should be noted that the winding device 31 further includes a pressing and positioning assembly 315. The pressing and positioning assembly 315 includes a pressing guide rail 3151, a pressing moving frame 3152, a pressing roller 3153, and a pressing drive unit 3154. The pressing guide rail is disposed on the frame, the pressing moving frame is slidably disposed on the pressing guide rail, the pressing roller is disposed on the pressing moving frame, and the pressing drive unit is used to drive the pressing moving frame to move, so that the pressing roller moves closer to or away from the rotating shaft. It should be noted that the pressing and positioning assembly 315 and the rotating positioning assembly 314 together limit the position of the electrode and the diaphragm; the pressing guide rail 3151 is used to realize the movement of the pressing moving frame 3152; and the pressing moving frame 3152 is used to fix the pressing roller 3153.

[0061] Please see Figure 9 The winding device 31 further includes a cutter assembly 316, which includes a cutter drive unit 3161, a cutter fixing frame 3162, and a core cutter 3163. The cutter drive unit is mounted on the frame, the cutter fixing frame is mounted on the cutter drive unit, and the core cutter is mounted on the cutter fixing frame. Thus, by providing the cutter assembly 316, after a shaft change, the wound battery cell needs to be cut, thereby separating the wound battery cell from the separator.

[0062] Furthermore, after the turntable has finished winding a needle, it needs to be flipped over, the pick-up clamp moved into place, and the shaping inner clamp fixed the battery cell before the cutter can cut the diaphragm.

[0063] It should also be noted that the winding device also includes a paper ejector motor, which is connected to the winding needle. When the diaphragm is cut, the distance is too large, and winding will cause some waste and the finished battery cell is too large, which is not conducive to putting it into the steel shell. Therefore, the paper ejector motor needs to retract the diaphragm to avoid waste.

[0064] It should be noted that the outer casing positioning assembly includes an outer casing positioning slider, a positioning unloading groove, and an outer casing positioning drive unit. The outer casing positioning slider and the positioning unloading groove are respectively disposed on the frame, and the outer casing positioning drive unit is used to position the outer casing. Thus, the outer casing positioning slider facilitates the positioning of the steel casing; the positioning unloading groove is used to unload the steel casing after it has been packaged; and the outer casing positioning drive unit is used to drive the steel casing into the positioning area, facilitating the pushing of the wound battery cell into the steel casing.

[0065] Please see Figure 7The winding device 31 further includes a needle removal assembly 317, which is mounted on the frame and is used to remove the rotating shaft from the battery cell after shaft replacement. The needle removal assembly 317 includes a rotating shaft gripping robot 3171 and a needle removal cylinder 3172. The needle removal cylinder is mounted on the frame, and the rotating shaft gripping robot is mounted on the needle removal cylinder. The needle removal cylinder drives the rotating shaft gripping robot to move, so that the rotating shaft gripping robot grips and removes the wound needle. Thus, by providing the rotating shaft gripping robot 3171 and the needle removal cylinder 3172, the wound needle can be easily removed.

[0066] Please see Figure 10 and Figure 11 The core gripping robot 323 includes a shaping inner clamp 3231, a shaping outer clamp 3232, a needle retraction baffle 3233, and a core gripping drive 3234. The core gripping drive is used to drive the shaping inner clamp and the shaping outer clamp to move, thereby gripping or releasing the core. The needle retraction baffle is disposed on the shaping outer clamp.

[0067] It should be noted that the inner shaping clamp 3231 has two parts, one upper and one lower. When both parts are in operation simultaneously, they can clamp or release the core. Similarly, the outer shaping clamp 3232 also has two parts, one upper and one lower, which can clamp and release the core simultaneously. Furthermore, the inner shaping clamp 3231 can strictly control the size of the core, ensuring that the core diameter is smaller than the inner diameter of the steel shell. Please refer to [further details omitted]. Figure 6 A steel shell fixing groove 3235 is pre-set at the rear end of the shaping inner clamp. The steel shell fixing groove facilitates the steel shell opening to press against the shaping inner clamp, so that the core can be quickly pushed into the steel shell.

[0068] Further, please refer to Figure 11 The two shaping inner clamps 3231 are in contact with each other, and a negative electrode dwell area 3236 is reserved. That is, after the entire core rotates, the negative electrode will be aligned with the negative electrode reserved area, so that the negative electrode will not be pressed into the steel shell when it is pushed in.

[0069] It should also be noted that the retraction baffle 3233 is used to clamp the battery cell, completing the final work before pushing it into the steel shell, and clamping the core. When the core needs to be removed, the core clamping robot can move to the steel shell insertion station. This is to prevent the diaphragm from being pulled out during the retraction. The baffle needs to be placed at the rear of the core. Moreover, by setting the retraction baffle, on the one hand, it can prevent the winding from being loose and spreading out, and on the other hand, it can make the diameter of the core smaller than the inner diameter of the steel shell, making it easier for the core to be pushed into the steel shell.

[0070] It should be noted that the shaping outer clamp 3232 includes an outer shaping fixing arm 3232a and an outer clamping pressure roller 3232b. The outer shaping fixing arm is disposed on the core clamping drive component, and the outer clamping pressure roller is disposed on the outer shaping fixing arm. It should be noted that the outer shaping fixing arm 3232a is used to fix the outer clamping pressure roller, and the outer clamping pressure roller 3232b is used to press the core tightly. Before the core enters the steel shell, it needs to be pressed more tightly to ensure better adhesion between the electrode sheet and the diaphragm, creating the necessary conditions for controlling the core size when entering the steel shell.

[0071] Please see Figure 12 Furthermore, the shaft-changing drive unit 3122 includes a first needle-retracting cylinder 3122a, a second needle-retracting cylinder 3122b, a needle-exiting cylinder 3122c, a first servo motor 3122d, a second servo motor 3122e, a turntable motor 3122f, an upper fixing plate 3122g, a first lower fixing plate 3122h, a second lower fixing plate 3122i, and two proximity switches. The turntable motor drives the rotating turntable to rotate. The upper fixing plate is disposed on the shaft-changing frame. The first lower fixing plate and the second lower fixing plate are respectively disposed on the rotating turntable, and the first lower fixing plate and the second lower fixing plate are two fixing plates of different lengths. The proximity switches are used to detect the state of the first lower fixing plate and the second lower fixing plate. The first needle-retracting cylinder, the second needle-retracting cylinder, the needle-exiting cylinder, the first servo motor, and the second servo motor are respectively disposed on the shaft-changing frame.

[0072] A dual proximity switch is installed on the upper fixing plate. The first and second lower fixing plates are of different lengths and are set at 180 degrees apart. During operation, the turntable motor drives the gear to rotate 180°. The inner proximity switch on the upper fixing plate senses the accurate position, and the outer proximity switch determines the position of the lower fixing plate.

[0073] When the outer side approaches the lower fixing plate, the outer side proximity switch determines the first or second lower fixing plate. At this time, the lower fixing plate is a long piece, and the winding needle on the needle cylinder is driven by the first servo motor to complete a winding operation, which is a pre-winding operation. Then, after the upper and lower electrode plates are sent to the designated position by the feeding mechanism, a second winding is performed. In addition, another winding needle is driven by the second servo motor, and the core clamping robot moves into place. The outer and inner shaping clamps are fixed to wind the battery core, and the finishing rotation is performed to tightly wind the exposed electrode plate into the inner shaping clamp. The above completes one cycle.

[0074] After one cycle, the turntable motor drives the gear to rotate 180° again. The inner proximity switch accurately determines the position, and the outer proximity switch determines the first or second lower fixing piece. At this time, the lower fixing piece is a short piece and does not generate a signal.

[0075] The winding needle on the needle-exit cylinder is driven by the second servo motor to complete one winding operation, which is the pre-winding operation. Then, after the upper and lower electrode sheets are sent to the designated position by the feeding mechanism, they are wound a second time. In addition, another winding needle is driven by the first servo motor. The core clamping robot moves into place, and the outer and inner shaping clamps are fixed to wind the battery core. The final rotation is performed to tightly wind the exposed electrode sheets into the inner shaping clamp. The above completes the second cycle.

[0076] In existing battery production processes, the battery needs to be encased, after which the battery tabs are exposed above the opening of the steel casing. During the casing collection process, the casing is pressed down directly from above, causing it to fall into the collection basket. This easily flattens the exposed tabs, pressing them into the casing. Consequently, in subsequent processes, the tabs need to be manually removed from the casing, which is time-consuming, labor-intensive, and results in low battery production efficiency.

[0077] Please see Figure 13 A battery receiving mechanism 40 is mounted on a frame. The battery receiving mechanism 40 includes: a feeding push device 41, a clamping and moving device 42, and a receiving box device 43. It should be noted that the feeding push device 41 is used to connect to the positioning and unloading slot of the cell winding and casing mechanism and push the steel shell into the clamping and moving device 42; the clamping and moving device 42 is used to clamp a whole row of steel shells for unloading; the receiving box device 43 is used to collect a whole row of steel shells into which the wound cells have been transferred.

[0078] Please see Figure 13 The clamping and moving device 42 includes a clamping fixing frame 421, a clamping robot 422, a clamping lifting drive assembly 423, and a steel shell unloading assembly 424. The clamping fixing frame is mounted on the frame, the clamping lifting drive assembly is mounted on the clamping fixing frame, the clamping robot is mounted on the clamping lifting drive assembly, the clamping robot is used to clamp a whole row of steel shells, the steel shell unloading assembly is mounted on the clamping fixing frame, and the steel shell unloading assembly is connected to the feeding push device. It should be noted that the clamping fixing frame 421 is used to fix the clamping robot 422, the clamping lifting drive assembly 423, and the steel shell unloading assembly 424. The clamping robot 422 clamps a whole row of steel shells; the clamping lifting drive assembly 423 is used to drive the clamping robot 422 to move up and down; the steel shell unloading assembly 424 is used to place the whole row of steel shells. When it is full, the steel shell unloading plate is pulled out so that the steel shells can be unloaded onto the receiving box. The receiving box device is used to collect the steel shells clamped by the clamping robot.

[0079] Please see Figure 13The clamping robot 422 includes a clamping frame 4221, a clamping baffle 4222, a clamping push plate 4223, and a clamping drive cylinder 4224. The clamping frame is mounted on the clamping lifting drive assembly, the clamping baffle is mounted on the clamping frame, and the clamping push plate is slidably mounted on the clamping frame. The clamping drive cylinder is used to drive the clamping push plate to move closer to or away from the clamping baffle. The clamping baffle and the clamping push plate together form a steel shell clamping channel, which is connected to the feeding push device. It should be noted that the clamping frame 4221 is used to fix the entire clamping robot 422; the clamping baffle 4222 is used to be fixed on the clamping frame 4221 and to clamp one side of the steel shell; the clamping push plate 4223 is used to be fixed on the clamping drive cylinder 4224 and to clamp the other side of the steel shell; the clamping drive cylinder 4224 is used to drive the clamping push plate 4223 to move.

[0080] Please see Figure 14 The material clamping and lifting drive assembly 423 includes a lifting fixed plate, a material clamping and lifting slide rail, and a material clamping and lifting cylinder. The lifting fixed plate is disposed on the material clamping frame, and the material clamping and lifting slide rail and the material clamping and lifting cylinder are respectively disposed on the lifting fixed plate. The material clamping frame body is slidably disposed on the material clamping and lifting slide rail, and the material clamping and lifting cylinder is used to drive the material clamping frame body to move up and down. Thus, by setting up the lifting fixed plate, the material clamping and lifting slide rail, and the material clamping and lifting cylinder, the lifting and lifting drive function of the material clamping frame body can be realized.

[0081] Please see Figure 13 The feeding and pushing device 41 includes a receiving chute 411 and a steel shell pushing assembly 412. The receiving chute is connected to the steel shell clamping channel, and the steel shell pushing assembly is mounted on the clamping frame. The steel shell pushing assembly is used to push the steel shell in the receiving chute into the steel shell clamping channel. It should be noted that the receiving chute 411 is used to unload the steel shell; the steel shell pushing assembly 412 is used to push the unloaded steel shell into the steel shell clamping channel.

[0082] Please see Figure 13 The steel shell pushing assembly 412 includes a pushing fixing plate 4121, a steel shell pushing block 4122, and a steel shell pushing cylinder 4123. The pushing fixing plate is disposed on the clamping fixing frame, the steel shell pushing cylinder is disposed on the pushing fixing plate, and the steel shell pushing block is disposed on the steel shell pushing cylinder. Thus, by configuring the pushing fixing plate 4121, the steel shell pushing block 4122, and the steel shell pushing cylinder 4123, a pushing action on the steel shell can be achieved.

[0083] Please see Figure 14The steel shell unloading assembly 424 includes a steel shell placement plate 4241, a movable connecting plate 4242, and an unloading drive unit 4243. The unloading drive unit is mounted on the clamping frame, the movable connecting plate is mounted on the unloading drive unit, and the steel shell placement plate is mounted on the movable connecting plate. The steel shell placement plate is used to place steel shells. It should be noted that while the steel shell placement plate 4241 is used to place steel shells, when the unloading drive unit 4243 drives the movable connecting plate to move, it also moves the steel shell placement plate 4241, causing the steel shell clamping channel to lack the support of a base plate. At this time, the clamping robot arm 422 then clamps the entire row of steel shells and lowers them into the receiving box.

[0084] It should be noted that the feeding drive unit includes a feeding fixed plate, a feeding moving guide rail, and a feeding drive motor. The feeding fixed plate is disposed on the clamping fixed frame, and the feeding drive motor is disposed on the feeding fixed plate and connected to the moving connecting plate. The feeding moving guide rail is disposed on the steel shell placement plate, and a feeding groove is formed on the feeding fixed plate. The feeding drive motor drives the moving connecting plate to move, thereby causing the feeding moving guide rail on the steel shell placement plate to slide within the feeding groove. Thus, by providing the feeding fixed plate, feeding moving guide rail, and feeding drive motor, the movement of the steel shell placement plate 4241 is conveniently achieved.

[0085] Please see Figure 15 The receiving box device 43 includes a receiving fixing frame 431, a receiving sliding assembly 432, and a steel shell transfer box 433. The receiving fixing frame is mounted on the frame, the receiving sliding assembly is mounted on the receiving fixing frame, and the steel shell transfer box is placed on the receiving sliding assembly. It should be noted that the receiving fixing frame 431 is used to fix the receiving box device 43; the receiving sliding assembly 432 is used to drive the steel shell transfer box 433 to move; and the steel shell transfer box 433 is used to collect steel shells.

[0086] It should be noted that the receiving sliding assembly 432 includes a base plate, a receiving box positioning fixture, and multiple sliding screws. The base plate is mounted on the frame, and each of the sliding screws is mounted on the base plate. The receiving box positioning fixture is slidably mounted on the sliding screws. Thus, by configuring the base plate, the receiving box positioning fixture, and the multiple sliding screws, the steel shell transfer box 433 can be driven.

[0087] It should be noted that the receiving box positioning fixture includes multiple receiving positioning plates, which together form a box receiving area, within which the steel shell transfer box is placed. Thus, by setting multiple receiving positioning plates, its positioning function can be further improved.

[0088] The advantages and beneficial effects of this invention compared to the prior art are as follows:

[0089] This invention is an automated battery cell winding and packaging machine. By setting up a positive electrode feeding mechanism, a negative electrode feeding mechanism, a battery cell winding and casing mechanism, and a battery receiving mechanism, it can ensure normal electrode feeding, facilitate robotic arm adsorption, and ensure that the electrode tabs are exposed outside the steel shell.

[0090] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. An automated cell winding packer, characterized by, The application relates to a battery production device. The device comprises a rack, a positive electrode sheet feeding mechanism, a negative electrode sheet feeding mechanism, an electric core winding and casing mechanism and a battery collecting mechanism, wherein the positive electrode sheet feeding mechanism, the negative electrode sheet feeding mechanism, the electric core winding and casing mechanism and the battery collecting mechanism are arranged on the rack. The positive electrode sheet feeding mechanism comprises a sheet feeding rack, a conveying assembly, a sheet adsorption assembly and a diaphragm feeding assembly, the sheet feeding rack is arranged on the rack in an inclined manner, the conveying assembly is used for conveying the positive electrode sheet, and the sheet adsorption assembly is used for adsorbing the sheet on the conveying assembly to the diaphragm on the diaphragm feeding assembly. The electric core winding and casing mechanism comprises a winding device and a casing device, the winding device is used for winding the stacked sheet and diaphragm, the casing device comprises a winding core pushing rod and a winding core clamping manipulator, the winding core clamping manipulator clamps the wound electric core to a casing station, the winding core pushing rod is used for pushing the electric core on the winding core clamping manipulator into a steel casing, and a position-avoiding notch is arranged on the winding core pushing rod and used for avoiding the electrode lug on the electric core. The conveying assembly comprises a conveying belt and a fixing block, the conveying belt is arranged on the sheet feeding rack, and the fixing block is arranged on the conveying belt, the conveying belt is used for driving the fixing block to move in an inclined manner. The positive electrode sheet feeding mechanism further comprises a sheet conveying assembly, which is used for conveying the sheet on the sheet adsorption assembly to the diaphragm on the diaphragm feeding assembly.

2. The automated cell winding packer of claim 1, wherein, The positive electrode sheet feeding mechanism and the negative electrode sheet feeding mechanism have the same structure.

3. The automated cell winding packer of claim 1, wherein, The diaphragm feeding assembly comprises a diaphragm feeding disc, a tension adjusting arm and a plurality of tension rollers, the diaphragm feeding disc and the tension adjusting arm are arranged on the rack, and each tension roller is arranged on the rack.

4. The automated cell winding packer of claim 1, wherein, The sheet conveying assembly comprises a sheet conveying plate, a sheet limiting block and a conveying driving part, the conveying driving part is arranged on the rack, the sheet conveying plate is arranged on the conveying driving part, the sheet limiting block is arranged on the sheet conveying plate, and the conveying driving part is used for driving the sheet conveying plate to move so that the sheet on the sheet conveying plate is conveyed to the diaphragm.

5. The automated cell winding packer of claim 1, wherein, The winding device comprises a winding assembly and a needle turning assembly, the winding assembly and the needle turning assembly are arranged on the rack, the winding assembly is used for winding the positive and negative electrode sheets and the diaphragm into an electric core of a battery, and the needle turning assembly is used for replacing the wound electric core.

6. The automated cell winding packer of claim 5, wherein, The winding device further comprises a needle withdrawing assembly, the needle withdrawing assembly is arranged on the rack, and the needle withdrawing assembly is used for withdrawing the rotating shaft in the replaced electric core.

7. The automated cell winding packer of claim 6, wherein, The needle withdrawing assembly comprises a rotating shaft clamping manipulator and a needle withdrawing cylinder, the needle withdrawing cylinder is arranged on the rack, the rotating shaft clamping manipulator is arranged on the needle withdrawing cylinder, and the needle withdrawing cylinder is used for driving the rotating shaft clamping manipulator to move so that the rotating shaft clamping manipulator clamps and withdraws the rotating shaft.

8. The automated cell winding packer of claim 1, wherein, The battery collecting mechanism comprises a clamping and moving device and a collecting box device, the clamping and moving device and the collecting box device are arranged on the rack, and the clamping and moving device is used for clamping and placing the packaged steel casing into the collecting box device.

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